How long can humans survive without gravity?

Will future generations rely on long-term space travel for survival? Could the human body survive long periods in space?
Taken from the documentary: "FirstScience Presents: Starman" available at FirstScience.tv
Download in full at: firstscience.tv/starman.htm

[@Hatinonthehaters]

Valeri Polyakov, launched 8 January 1994 (Soyuz TM-18), stayed at Mir for 437.7 days,during which he orbited the Earth about 7,075 times and traveled 300,765,000 km (186,887,000 mi), returning 22 March 1995. He was there alone.....

[@Anthraxb0mb]

The video doesn't answer the question in the title.

[@wolfmannn2008]

01:19 Witch muscle shrink did he notice first? LOL

[@JustErup]

@JustAManInAMask Gravity does not push us forward it pulls us downwards. And yes the bigger gravity the more muscles you need to use it

[@solidsnackumzzz]

@applesweeter Space travel is a means to prolong the survival of the human race, and to address our craving for understanding and knowledge as humans.
Id imagine zero gravity feels nice since its supplies a completely effortless means of movement and is so different from regular travel.
I'd assume we experiment in zero gravity to test the extreme properties of materials to derive usefull uses, and in preparation for long term space travel to distant planets.

[@RuinedEraser]

@JustAManInAMask yes, If we had more gravity pulling on us we would have to gain more strength just to be able to walk comfortably. But there might be a way a species can grow with a better bone or muscle structure that requires less strength to do activities in a higher gravity that we would normally be unable to perform.

[@Xehemoth]

are we talking paper-cuts or Mortal Kombat fatalities?

[@wolfmannn2008]

@JustAManInAMask Yes but it does not mean that they could beat us, it's how you are used to it. For example imagine fighting someone in space, or in the moon, for us it would be impossible.

[@Filo127]

@JustAManInAMask hmmm . Im no scientist , but i dont think so , because the larger someone is the more he is affected by gravity , so I think that species on bigger planets would be smaller. But is also debends on the resources they have.

[@evankiefl]

Stronger for sure, larger, maybe not.

[@martinwood3236]

What happends if you bleed in space?

[@skillExtasy]

@JustAManInAMask if the grav is higher, they have to be stronger, but i dont think hey have to be bigger

[@weomgi]

Wow

[@t88boost]

@JustAManInAMask yea it sure does. if u ever watched the cartoon series dragon ball z, the characters use to train on other planets with gravity 10,000 times of their planet.

[@sicness4ooooo]

Doesn't matter, was in space.

[@SlinkyJinks]

@JustAManInAMask but how does it explain dinosuars they were HUGE and some other species like sharks to giant crocs have shrunk would that mean earths gravity is getting weaker? lol

[@Darthreloy]

And they dont answer the question at all.

[@rumixzzz]

umm thats y alien r soo skinny

[@solidsnackumzzz]

@JustAManInAMask Pound for pound and in absolute terms, well yes.

[@muraturile]

@JustAManInAMask LOGYK

[@wolfmannn2008]

@rihannahatsdrauf Lol they do :P

[@ElectricityTaster]

@applesweeter
1) Because we are all explorers in some way or another.
2)Because it's so different and effort less.
3)That's like asking a teenage boy why he wants to be in a sex experiment with a load of hot women.

[@garudaeagle3]

@JustAManInAMask Didnt Dragonball prove this? :DD

[@oelakad]

lol